Armor for pneumatic tires.



A. H. MACBETHD ARMOR' FOR PNEUMATIC 'TIEES. APPLICATION FILED DEO.30,190B.

Patwted July 26, 1910.

. I WITNESSES.- q INVENTOR.

A TTOR/VEY.

ALBERT HENRY MACBETH, or roan: WAYNE, INDIANA. i

ARMOR FOBPNEUMATIG' TIRES. i

Specification of Letters Z Patent.

Application filed December 30, 190a. Serial No. 469,96

To all whom it may concern:

Be it known thatI, ALBERT HENRY MAo-' BETH, a- .citizen of the United States of America, residing in Fort Vayne, county of Allen, and State of Indiana, have in-' vented certain new and useful Improvements in Armors for Pneuniatlc T1res,and

' do declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in armors for pneumatic tires, particularly automobile tires, and the invention consists in the construction and combination of elements hereinafter specified and claimed.

Referring to the views of the drawings, Figure 1, is a plan view of one section of the armor-band, with a tread-plate attached, detached from the tire. Fig. 2, is an edge View thereof. Fig. 3, is a cross-section on line 33 of Fig. 4, through the armor and rubber tire. Fig. 4, is a view of a portion of the tire-rim and tire with two sections of the armor-band and tread-plates in position there-on. Fig. 5, is a plan View of the armor-band. Fig. 6, is a plan view of the tread-plate.

In the drawings, a, designates the usual whecl-rim to which the pneumatic tire, b, is secured in the ordinary way.

The armor is made up of aplurality of sections, each section consists of an armorband, 0, to the opposite ends of which by any suitable means are secured hooks d,

which are engaged with the usual annular projections of the wheel'rim. This arinon hand, 0, may be formed of any suitalfl aaterial, but I preferably use the ordinary rubber belting. The sections may be of any suitable width, but in practice I have found it desirable to make them about three inches in width. To this'armor-band is detachably secured, preferably, by means of bolts, 6,

and nuts, 6, the tread-plate, 1, which may be constructed of various materials, but in practice I have found the ordinary rubber 0 This treadplate is substantially the same width as the armor-band, and is secured thereto in such position that one edge, .f", overlaps the edge of the armor-band. In thusv securing the tread-plate to'the armor'band, there is left at the opposite edge of the arirlor-band a portion, which .is adapted to receive the overlapping portion, f, of the adjacent tread-plate. By this arrangemenh thejoints between the sectionsof the armor-bands and the several sections of-the tread-plates, are out of alinement. In other words, the tread plates and armor-bands, break joints, those parts forming a protective covering for the tire and preventing any possible puncture of the tire. I

The tread-plates may be secured to the armor-band by any suitable means as for example by bolts and nuts shown, but the edges of the tread-plates projecting laterally beyond the bolts, are preferably free from the armonband, whereby they may form a greater catching surface against sideslipping and may yield to lateral pressure. The edges of the tread-plates are preferably cut at right angles to' the surface thereof, whereby sharp edges, h, are provided. The nuts, 6, are preferably squared.

The bolts, e,'and the nuts, 6, are arranged to project from the outer surface of the tread-plate, thus forming both the securing means and an effective part of the anti-slipping means. The'projecting parts of the nuts and bolts and the tread-plate, effectively prevent the tire from slipping in any direction. This would be true of any form of projecting bolt or rivet,'but I preferably use the squared nut and cut the edges of the tread-plate at right angles to its surface whereby more or less sharp contact points are presented for contact with theroad-surface.

In assembling the armor on the tire, the tire is first deflated, the hooks, d, are placed in position to engage the wheel rim, after which the tire is inflated. Upon inflation the tire expands against the armor-band. 95

tire is overcome, andthe life of the tire is 1 Very materially lengthened.

Having described IIIYlIlVGIltlOIl, what I claim is,

. 1. An armor forpneumatic tires compris ing a series of separate and independent 1 flexible armor bandsect-ions, means for se curing the ends of the respective sections to the rim of the wheel, a flexible tread plate secured to each section and overlapping the adjacent section over substantially-the entire 110 width of tread surface, whereby the joints between the sections at the tread surface are protected fronipuncture.

2. An armor for pneumatic tires consisting of a series of separate and independent flexible armor band sections, a hook secured to each end of said armor band sections and adapted to engage the rim'of the wheel, a flexible tread plate on each section of substantially the same length as the Width of an armor bandsection, arranged 'to overlap one edge thereof and be free of the other edge a distance corresponding to the width of the overlappin section of the next tread plate, bolts exten ing through the tread plate and 1'.

beyond the nuts, and nuts secured to the bolts for detachably securing the tread plate to the armor band section and form. an inregular exterior surface. In testimony whereof name to this specification in the presence of two subscribing witnesses.

ALBERT HENRY MACBETH. Witnesses:

H.'C. UNDERWOOD, CHARLES S. OLBERTSON.

I have signed my r-L 

